Seems like around here (The heart of Ford Country) I see either old people or girls driving v6 mustangs. Otherwise its some poser or ricer who thinks his car is fast and tries to race everybody, or has riced it out and put Cobra badges on it.
Mustangs are muscle cars, so the only one to get is the v8 manual IMO. The rest are cars for people who just like to pretend they have something sporty!
